Gires-Tournois Interferometer (GTI) mirrors


Do you aim for performance optimization of your Ti:Sapphire, Yb:KGW, Yb:KYW or other femtosecond laser? OPTOMAN has a solution - GTI mirror.
GTI mirror is a kind of dielectric dispersive mirror with a spatial variation of the layer thickness values. Such mirrors are used for dispersion compensation in mode-locked lasers, for example.
OPTOMAN will design GTI mirrors featuring broadband behaviour with GDD down to -2000 fs2 per bounce for your femtosecond laser system.


Absolute reflectance Rs>99.95% and Rp>99.95%

Absolute reflectance of GTI mirrors goes above 99.95% for the most demanding applications.

Highly Negative Group Delay Dispersion (GDD)

GTI Mirrors can be designed for any specific GDD requirement from slightly negative (-20 fs2) down to -2000 fs2.

Wide spectral bandwidth

In compromise to required reflectance and GDD values, broadband GTI Mirrors are feasible, as for example HR>99.8% at 760 - 840 nm with GDD=-200 fs2.

High Laser Damage Threshold

GTI mirrors are optimized for high resistance to laser irradiance with LIDT of >200 mJ/cm2 at 50 fs, 1030 nm. 

Custom design Custom
  • Negative Group Delay Dispersion (GDD) down to –2000 fs^2.
  • Mirrors with predefined and flat GDD.
  • Spectral range from 200 nm up to 6000 nm.
  • Diameter from 5 mm up to 101.6 mm.
  • Coatings on substrates with positive or negative curvature.

Request Custom

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